A multi-beam antenna is defined as an antenna having capability to generate multiple independent beams from a single aperture. The development of next generation wireless network (5G) technology has become one of the major factors driving the growth of the market. For instance, the Ministry of Industry and Information Technology in China announced that 5G technology services will be commercialized by 2020. In addition, the increasing demand for high speed internet connectivity due to rising adoption of advanced technologies such as machine-to-machine/IOT has emerged as a major factor which has enhanced the demand for 5G technology. By 2022, the number of machine-to-machine connected devices is expected to reach 14.6 billion up from 6.1 billion in 2017, globally. The multi-beam antenna can operate in millimeter wave frequency bands offering high data transmission rate and increased energy efficiency, which makes multi-beam antenna a key component for fifth generation network...